JSFiddle - React, Tailwind, and code Playground

HTML

hello 
<div class="outer">
  <div class=inner></div>
</div>
world

CSS

.outer {
  display: inline-block;
  outline: 1px solid pink;
}

.inner {
  display: inline-block;
  height: 250px;
  width: 250px;
  background: rgba(255,255,0,.5);
  padding: 17.4222px;
}